Highfive is so simple that setting up every meeting room takes just minutes and every employee will be able to start or join a call from any room with ease. Never be called into a meeting just to get it started again. This is how video conferencing should work!

The "Add workstation to domain" by default set to Authenticated Users on the Default Domain Controllers policy. You need to modify this and remove authenticated users. An Authenticated User (if this policy is enabled) has the rights to add 10 domain computers before getting access denied. This is due to mS-DS-MachineAccountQuota attribute in Active Directory.

If you want to allow users to add machines to the domain without being a domain admin this is also possible.

The following permissions are required to add a machine to the domain without being a domain admin...
Reset Password
Validated write to DNS host name
Validated write to service principal name
Write Account Restrictions

So the answer is you need to modify the permissions on the default domain controllers policy and remove authenticated users.

John: by default Authenticated Users can add up to 10 machines to the domain before getting access denied unless this policy has been changed to not allow this.

No security measures warrant 100% as a "silver bullet". The truth is we also cannot assume anything but a defensive and vigilance posture. Adopt no trust by default and reveal in assumption. Only assume anonymity or invisibility in the reverse. Safe…

Security measures require Windows be logged in using Standard User login (not Administrator). Yet, sometimes an application has to be run “As Administrator” from a Standard User login. This paper describes how to create a shortcut icon to launch a…

This video shows how to remove a single email address from the Outlook 2010 Auto Suggestion memory.
NOTE: For Outlook 2016 and 2013 perform the exact same steps.
Open a new email: Click the New email button in Outlook.
Start typing the address: …